单词	协变方程[式]
释义	协变方程[式]covariant equation
随便看	control-- intermittent control interval control interval block level control interval level control interval update sequence number control jet control joint control key control key combination control knob control knowledge controllabilities controllability controllability canonical form controllability condition controllability index controllability indices controllability matrix controllability of aircraft controllability subindex controllable controllable ballast controllable chain reaction controllable connection controllable converter arm